Who Are David Foster's Daughters Erin and Sara? Get to Know the Famous Sisters

David Foster's daughters, Erin Foster and Sara Foster, are certainly not novices when it comes to navigating the world of celebrity. The music producer's 30-something daughters grew up in L.A. around A-listers-- including their parents. In addition to calling David dad, their mom is former model Rebecca Dyer. While Real Housewives of Beverly Hills fans are familiar with Yolanda Hadid's ex, his family life outside of the show may still be a bit of a mystery. In an interview on the Pardon My French podcast, Erin and Sara open up about a number of personal subjects, including ageism in Hollywood, reality TV stardom, and their place among their large family, which includes former stepsiblings (and reality stars) Brody and Brandon Jenner, as well as Gigi and Bella Hadid.

The sisters were three and five when their parents split, and they shared that they've never lived with their dad. They also have another sister, Jordan, who lives in New York. "I don’t even know who I am, all I know is that I am the sibling, daughter, sister, the friend of somebody and I need to know who I am outside of that," Erin said of why she went to boarding school in Switzerland in her youth. "When you have a big family, certainly with strong personalities, you feel like you have to fall into a role and I didn’t want to be the little sister or the daughter because that's who you become as an adult. So I do think you have roles."

However, the two women grew up in a time when everyone wanted to be on reality TV, which never appealed to them. People we "seeking out this version of fame that wasn't really attributed to anything specific... and it didn't feel right to us... we didn't have an ambition to just be out in the world. We were able to separate ourselves and go 'That's not something were interested in.'" They added that "the desire to be famous, it was never even a thought." However, they noted that the reason a show like Keeping Up With the Kardashians (which has featured the Jenner brothers) works is because they are willing to go all in, "that family leaned into it" and allowed people to see them for who they are.

Erin and Sara with Kendall and Kris Jenner.

In fact, they spoof the idea of dying to reach celebrity status on their fake VH1 reality show, Barely Famous, which is currently in production on Season 2. And they have come up with a philosophy for working together. "What’s important in any working relationship or working with someone in your family is you have to start with a clean slate," Erin said. "Sometimes you have to sit down and sort s*** out so you can be friends again. We had a five-hour conversation where I was like, tell me everything you are mad about and I will tell you everything I am mad about and let’s hash it out, point by point, so we can start Season 2 with a clean slate."